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A Sensor Array for the Detection and Discrimination of Methane and Other Environmental Pollutant Gases.

ABSTRACT: We address the sensitive detection and discrimination of gases impacting the environment, such as CH?, NH?, SO?, and CO, using a sensor array and aided by principal component analysis (PCA). A 32-element chemiresistive sensor array consisting of nine different sensor materials including seven types of modified single-walled carbon nanotubes and two types of polymers has been constructed. PCA results demonstrate excellent discriminating ability of the chemiresistor sensor chip in the 1-30 ppm concentration range. The accuracy of the sensor was verified against data collected using cavity ring down spectroscopy. The sensor chip has also been integrated with a smartphone and has been shown to reproduce the sensing performance obtained with the laboratory measurement system.

SUBMITTER: Hannon A

PROVIDER: S-EPMC5017329 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature

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A Sensor Array for the Detection and Discrimination of Methane and Other Environmental Pollutant Gases.

Hannon Ami A Lu Yijiang Y Li Jing J Meyyappan M M

Sensors (Basel, Switzerland) 20160725 8

We address the sensitive detection and discrimination of gases impacting the environment, such as CH₄, NH₃, SO₂, and CO, using a sensor array and aided by principal component analysis (PCA). A 32-element chemiresistive sensor array consisting of nine different sensor materials including seven types of modified single-walled carbon nanotubes and two types of polymers has been constructed. PCA results demonstrate excellent discriminating ability of the chemiresistor sensor chip in the 1-30 ppm con ...[more]

PMID: 27463716

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